With a very impressive differential - those 20 winners far outweighed her nine unforced errors - the No.1-seeded Williams was never in trouble against the No.18-seeded Suárez Navarro, her power game clearly sharp and her defense strong too, letting just three winners from the Spaniard go by her.
"I played well - I played really well. I was just more focused than anything," Williams said afterwards. "I like to believe there is always room for improvement though. I haven't really thought about it yet, but off the bat, I think it was very difficult to hit a big serve today because of the winds, and I didn't get my serve up as much as I wanted to. But I don't know. I do think I definitely played well tonight."
Williams was asked in her press conference whether sympathy ever comes into play when a scoreline is so lopsided - and if there were ever a day to sympathize, it would be on your opponent's birthday.
"Well, you don't really think about it," Williams said. "You just think about winning the points and winning the games. That's all you think about. You don't think about... at least I don't think about anything else. Maybe after the match, but during the match I just try to stay in the moment out there."
Even more impressive for Williams is that she has lost only 13 games through her first five matches.
"I haven't thought about that either. I'm still in the tournament and I'm not thinking like, 'I'm really dominant now.' I'm thinking I have a really tough match in the next round and want to do well."
Williams is now through to the 24th Grand Slam semifinal of her career, and her record in those Grand Slam semifinals is only slightly less terrifying than her performance against Suárez Navarro: 20-3.
Awaiting Williams in that semifinal is No.5 seed Li Na, who won her quarterfinal against No.24 seed Ekaterina Makarova earlier in the day (read more here). Williams leads Li in their head-to-head, 8-1.
"She's a great challenge," Williams said of Li. "She moves really well. She does everything well. I think the challenge of playing someone like her is how do you beat a player that does everything so well? I'm going to have to think about that and come up with an answer to that in the next couple days.
"We've always played really close. Maybe next time we play she might want to go from close to a win.
"I have to be ready for that."